US11239693B2 - On-board power supply system and on-board control apparatus - Google Patents

On-board power supply system and on-board control apparatus Download PDF

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US11239693B2
US11239693B2 US16/612,502 US201816612502A US11239693B2 US 11239693 B2 US11239693 B2 US 11239693B2 US 201816612502 A US201816612502 A US 201816612502A US 11239693 B2 US11239693 B2 US 11239693B2
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Prior art keywords
power source
control apparatus
board control
power
source box
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US16/612,502
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US20200099253A1 (en
Inventor
Tomohiro Mizutani
Tsuyoshi Kontani
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Assigned to AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD. reassignment AUTONETWORKS TECHNOLOGIES, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KONTANI, Tsuyoshi, MIZUTANI, TOMOHIRO
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    • H02J13/0003—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H02J13/13—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the transmission of data to equipment in the power network
    • H02J13/1321—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the transmission of data to equipment in the power network using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H02J13/18—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the remotely-controlled equipment, e.g. converters or transformers
    • H02J13/34—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the remotely-controlled equipment, e.g. converters or transformers the equipment being switches, relays or circuit breakers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
    • H02J2105/30—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles

Definitions

  • the present disclosure relates to an on-board power supply system and an on-board control apparatus that control the operation of a controlled device mounted in a vehicle, and that control supply of power to the controlled device.
  • a large number of devices are mounted in a vehicle, and these devices operate by being supplied with power from an on-board power source such as a battery.
  • An apparatus called a power source box is provided in the power supply path from the power source to each device.
  • the power source box is connected to the power source via a power line, and is connected to the devices via individual power lines.
  • a plurality of switches are built in the power source box, and supply and non-supply of power from the power source to the device can be switched.
  • the operation of the device mounted in the vehicle is performed by, for example, an ECU (Electronic Control Unit).
  • the ECU controls the switching of each switch of the power source box, thereby switching between supply and non-supply of power to the device to be controlled by that ECU.
  • a power source apparatus for an automobile having a configuration in which, in a power source box interposed between a plurality of storage batteries and loads, a switch means for selecting whether to supply power from each storage battery to the load and a switch control unit that controls the switch means to select a storage battery that supplies power according to the output voltage value of each storage battery are provided, so that a storage battery selection operation can be performed by the switch control unit based on a control signal that is output from a load control unit that controls the loads.
  • the number of devices mounted in a vehicle has increased, and it has been studied to reduce the number of devices by integrating (uniting) a plurality of devices into one device.
  • As one plan for integration it is conceivable to integrate the above-mentioned ECU and the power source box into one apparatus.
  • a device to be controlled is connected to the ECU integrated with the power source box via a signal line and a power line, and the ECU performs operation control and power source control in an integrated manner.
  • the ECU integrated with the power source box performs the operation control and the power source control of the device in an integrated manner
  • the power line connecting the ECU and each device becomes long.
  • the amount of the power lines mounted in the vehicle may increase.
  • the present disclosure has been made in view of such circumstances, and an object thereof is to provide an on-board power supply system and an on-board control apparatus capable of reducing the number of devices mounted in a vehicle by integrating a power source box and an ECU, and suppressing an increase in the amount of power lines in the vehicle.
  • An on-board power supply system includes on-board control apparatuses each including a controller that is connected to a controlled device mounted in a vehicle via a signal line and that is configured to control the operation of the corresponding controlled device, and a power source box that is connected to a power source mounted in the vehicle via a power line, that is connected to the controlled device mounted in the vehicle via a power line, and that is configured to switch between supply and non-supply of power from the power source to the controlled device, wherein, to the power source box included in one of the on-board control apparatuses, a controlled device that is to be controlled by the controller included in another one of the on-board control apparatuses is connected, and the power source box included in the one of the on-board control apparatuses is configured to switch between supply and non-supply of power to the controlled device that is connected to the one of the on-board control apparatuses, in response to a switching command from the controller included in the other one of the on-board control apparatuses.
  • the power source boxes may each include a switch that is disposed in a power supply path from the power source to the controlled device, a reception unit configured to receive an input of the switching command, and a switching control unit configured to switch between conduction and interruption of the switch in response to the switching command received by the reception unit.
  • each reception unit may be configured to receive the switching command via an in-vehicle network provided in the vehicle.
  • a plurality of the on-board control apparatuses and a plurality of the controlled devices may be mounted in the vehicle, and each controlled device is connected to the power source box of the nearest on-board control apparatus via a power line, and is connected to the controller of the on-board control apparatus that is configured to control the controlled device via a signal line.
  • the on-board control apparatus is an on-board control apparatus that includes a controller that is connected to a controlled device mounted in a vehicle via a signal line and that is configured to control the operation of the corresponding controlled device, and a power source box that is connected to a power source mounted in the vehicle via a power line, that is connected to the controlled device mounted in the vehicle via a power line, and that is configured to switch between supply and non-supply of power from the power source to the controlled device, wherein the power source box includes a switch that is disposed in a power supply path from the power source to the controlled device, a reception unit configured to receive a switching command from another apparatus, and a switching control unit configured to switch between conduction and interruption of the switch in response to the switching command received by the reception unit.
  • a vehicle in the present disclosure, includes on-board control apparatuses in each of which a controller configured to control the operation of a controlled device is integrated with a power source box configured to switch between supply and non-supply of power from a power source to the controlled device.
  • a controlled device that is to be controlled by the controller of another one of the on-board control apparatuses is connected via a power line.
  • the power source box of the one of the on-board control apparatuses switches between supply and non-supply of power to the controlled device that is connected to the one of the on-board control apparatuses, in response to a switching command from the controller of the other on-board control apparatus.
  • the degree of freedom of connection between the power source box of the on-board control apparatus and a controlled device via a power line in the vehicle is increased, by making it possible to connect a controlled device that is not to be controlled by the corresponding controller to the power source box. This makes it possible to suppress an increase in the amount of the power lines.
  • a switch for switching between supply and non-supply of power to the controlled device a reception unit that receives a switching command from the other on-board control apparatus, and a switching control unit that switches between conduction and interruption of the switch in response to the received switching command are provided in the power source box of the on-board control apparatus.
  • the power source box which is integrated, can switch between supply and non-supply of power to the controlled device, which is not to be controlled by the controller, without hindering the processing of the controller that controls the operation of the controlled device.
  • the reception unit of the power source box receives a switching command via the in-vehicle network. In this manner, it is not necessary to provide a separate signal line for transmitting and receiving a switching command, because the power source box can receive a switching command from the other on-board control apparatus using the existing in-vehicle network. Accordingly, it is possible to suppress an increase in the amount of the signal lines in the vehicle.
  • each controlled device is connected to the power source box of the nearest on-board control apparatus via the power line, and is connected to the controller of the on-board control apparatus that controls the controlled device via the signal line.
  • the length of the power line that connects the power source box of the on-board control apparatus and the controlled device can be shortened, and an increase in the amount of the power lines in the vehicle can be suppressed.
  • an increase in the amount of the power lines in a vehicle can be suppressed in an on-board control apparatus in which a controller and a power source box are integrated, by employing a configuration in which a controlled device that is not to be controlled by the controller can be connected to the power source box.
  • FIG. 1 is a schematic view showing a configuration example of an on-board power supply system according to the present embodiment.
  • FIG. 2 is a schematic view showing a configuration example of the on-board power supply system according to the present embodiment.
  • FIG. 3 is a block diagram showing a configuration of a body-system on-board control apparatus.
  • FIG. 5 is a block diagram showing a configuration of a body-system on-board control apparatus according to a first modification.
  • FIG. 6 is a block diagram showing a configuration of a body-system on-board control apparatus according to a second modification.
  • FIG. 7 is a block diagram showing a configuration of a body-system on-board control apparatus according to a third modification.
  • FIGS. 1 and 2 are schematic views each showing a configuration example of an on-board power supply system according to the present embodiment.
  • the on-board power supply system according to the present embodiment is a system that controls the operations of a plurality of controlled devices (hereinafter referred to as “loads”) mounted in a vehicle 1 , and that controls the supply of power from a battery 2 to the plurality of loads mounted in the vehicle 1 .
  • FIG. 1 illustrates a configuration related to supply of power to the loads in the on-board power supply system, and power supply paths from the battery 2 to the loads are shown by thick solid lines.
  • FIG. 2 illustrates a configuration related to the operation control of the loads in the on-board power supply system, and transmission paths of control signals to the loads are shown by thick broken arrows.
  • supply or non-supply of power from the battery 2 to each load is switched and controlled by a plurality of on-board control apparatuses mounted in the vehicle 1 .
  • body-system loads 6 A and 6 B and multimedia-system loads (referred to as “MM-system load” in the figures) 7 A and 7 B are mounted in the vehicle 1 .
  • the on-board control apparatus is an apparatus obtained by integrating (uniting) a controller, such as a conventional ECU or a domain controller, and a power source box for power supply.
  • the body-system on-board control apparatus 10 A includes a controller 20 A and a power source box 30 A.
  • the multimedia-system on-board control apparatus 10 B includes a controller 20 B and a power source box 30 B.
  • the vehicle 1 is provided with a power source trunk line 3 and a communication trunk line 4 .
  • the power source trunk line 3 is a trunk line that can be called an energy backbone.
  • the power source trunk line 3 is constructed, for example, by laying one power line from the battery 2 mounted on the front side of the vehicle 1 to the rear side of the vehicle 1 .
  • Branch lines obtained by branching the power source trunk line 3 at appropriate locations are connected to the devices mounted in the vehicle 1 , and power is supplied from the battery 2 to devices. In the example shown in FIG.
  • two branch lines are branched from the power source trunk line 3 , and are respectively connected to the power source box 30 A of the body-system on-board control apparatus 10 A and the power source box 30 B of the multimedia-system on-board control apparatus 10 B.
  • the branch positions of the branch lines from the power source trunk line 3 can be in the vicinity of the installation positions in the vehicle 1 of the body-system on-board control apparatus 10 A and the multimedia-system on-board control apparatus 10 B, to which these branch lines are connected respectively.
  • the communication trunk line 4 is constructed by laying a communication line from the front side to the rear side of the vehicle 1 , for example.
  • the configuration of the communication trunk line 4 depends on the communication protocol. If communication is performed, for example, via a bus such as the CAN (Controller Area Network) communication protocol, the communication trunk line 4 may be a single bus or a set of buses. Also, if a star-type network configuration such as the Ethernet (registered trademark) communication protocol is employed, a plurality of repeaters such as hubs are arranged in the front-rear direction of the vehicle 1 , and the plurality of repeaters connected by communication lines can be used as the communication trunk line 4 . In the example shown in FIG.
  • two branch lines are branched from the communication trunk line 4 , and are respectively connected to the controller 20 A of the body-system on-board control apparatus 10 A and the controller 20 B of the multimedia-system on-board control apparatus 10 B.
  • the body-system on-board control apparatus 10 A and the multimedia-system on-board control apparatus 10 B can perform communication via the communication trunk line 4 .
  • various communication protocols such as CAN, CAN-FD (CAN with Flexible Data rate), Ethernet, MOST (Media Oriented Systems Transport), or FlexRay may be employed, for example.
  • CAN-FD CAN with Flexible Data rate
  • Ethernet Ethernet
  • MOST Media Oriented Systems Transport
  • FlexRay FlexRay
  • the power source trunk line 3 and the communication trunk line 4 may also be integrated.
  • an in-vehicle network 5 is provided in the vehicle 1 , apart from the network using the communication trunk line 4 .
  • the in-vehicle network 5 can be a network that employs a communication protocol such as CAN, and may be slower than the network using the communication trunk line 4 .
  • the controller 20 A and the power source box 30 A of the body-system on-board control apparatus 10 A and the controller 20 B and the power source box 30 B of the multimedia-system on-board control apparatus 10 B are connected to the in-vehicle network 5 .
  • the controllers 20 A and 20 B and the power source box 30 A and 30 B can perform communication via the in-vehicle network 5 . Accordingly, the controller 20 A can transmit a switching command or the like to the power source box 30 B, and the controller 20 B can transmit a switching command or the like to the power source box 30 A.
  • the body-system loads 6 A and 6 B are devices such as lights, wipers, windows, doors, or door locks of the vehicle 1 , for example, and are loads whose operations are controlled by the controller 20 A of the body-system on-board control apparatus 10 A. For this reason, as shown in FIG. 2 , the body-system loads 6 A and 6 B are connected to the controller 20 A of the body-system on-board control apparatus 10 A, and receive a signal or the like that controls the operation from the controller 20 A. Note, that the control signal from the controller 20 A to the body-system loads 6 A and 6 B may also be provided via the network using the communication trunk line 4 .
  • the body-system loads 6 A and 6 B are not necessarily connected to the power source box 30 A of the body-system on-board control apparatus 10 A.
  • each load of the vehicle 1 can be connected to the power source box of the closest (nearest) on-board control apparatus via a power line.
  • the body-system on-board control apparatus 10 A is mounted on the front side of the vehicle 1
  • the multimedia-system on-board control apparatus 10 B is mounted on the rear side of the vehicle 1
  • the body-system load 6 A is mounted on the front side of the vehicle 1
  • the body-system load 6 B is mounted on the rear side of the vehicle 1 .
  • the body-system load 6 A on the front side of the vehicle 1 is connected to the power source box 30 A of the body-system on-board control apparatus 10 A, and the body-system load 6 B on the rear side of the vehicle 1 is connected to the power source box 30 B of the multimedia-system on-board control apparatus 10 B.
  • the multimedia-system loads 7 A and 7 B are devices such as a display, a speaker, or a camera, for example, and are loads whose operations are controlled by the multimedia-system on-board control apparatus 10 B. Accordingly, as shown in FIG. 2 , the multimedia-system loads 7 A and 7 B are connected to the controller 20 B of the multimedia-system on-board control apparatus 10 B, and receive a signal or the like for controlling their operations from the controller 20 B. Note, that the control signal from the controller 20 B to the multimedia-system loads 7 A and 7 B may also be provided via the network using the communication trunk line 4 .
  • the multimedia-system loads 7 A and 7 B are not necessarily connected to the power source box 30 B of the multimedia-system on-board control apparatus 10 B. It is assumed that, for example, the body-system on-board control apparatus 10 A is mounted on the front side of the vehicle 1 , the multimedia-system on-board control apparatus 10 B is mounted on the rear side of the vehicle 1 , the multimedia-system load 7 A is mounted on the front side of the vehicle 1 , and the multimedia-system load 7 B is mounted on the rear side of the vehicle 1 . In this case, as shown in FIG.
  • the multimedia-system load 7 A on the front side of the vehicle 1 is connected to the power source box 30 A of the body-system on-board control apparatus 10 A, and the multimedia-system load 7 B on the rear side of the vehicle 1 is connected to the power source box 30 B of the multimedia-system on-board control apparatus 10 B.
  • the power source boxes 30 A and 30 B switch between supply and non-supply of power from the battery 2 to each load in response to a switching command provided from the controllers 20 A and 20 B.
  • the power source box 30 A of the body-system on-board control apparatus 10 A switches between supply and non-supply of power to the body-system load 6 A in response to a switching command that is directly provided from the controller 20 A of the body-system on-board control apparatus 10 A, and switches between supply and non-supply of power to the multimedia-system load 7 A in response to a switching command that is provided from the controller 20 B of the multimedia-system on-board control apparatus 10 B via the in-vehicle network 5 .
  • the power source box 30 B of the multimedia-system on-board control apparatus 10 B switches between supply and non-supply of power to the body-system load 6 B in response to a switching command that is provided from the controller 20 A of the body-system on-board control apparatus 10 A via the in-vehicle network 5 , and switches between supply and non-supply of power to the multimedia-system load 7 B in response to a switching command that is directly provided from the controller 20 B of the multimedia-system on-board control apparatus 10 B.
  • FIG. 3 is a block diagram showing the configuration of the body-system on-board control apparatus 10 A.
  • the body-system on-board control apparatus 10 A includes the controller 20 A and the power source box 30 A.
  • the controller 20 A includes a processing unit 21 , a control signal input/output unit 22 , a switching command output unit 23 , a first communication unit 24 , and a second communication unit 25 .
  • the processing unit (processor) 21 is configured using an arithmetic processing device such as a CPU (Central Processing Unit) or an MPU (Micro-Processing Unit), and executes various arithmetic processing and control processing by executing a program stored in a storage unit such as a flash memory or an EEPROM (Electrically Erasable Programmable Read Only Memory) (not shown).
  • arithmetic processing device such as a CPU (Central Processing Unit) or an MPU (Micro-Processing Unit)
  • a program stored in a storage unit such as a flash memory or an EEPROM (Electrically Erasable Programmable Read Only Memory) (not shown).
  • the processing unit 21 of the controller 20 A of the body-system on-board control apparatus 10 A controls the operations of the body-system loads 6 A and 6 B, and provides, to the power source boxes 30 A and 30 B, a switching command of supply and non-supply of power to the body-system loads 6 A and 6 B.
  • the control signal input/output unit 22 is connected to the body-system loads 6 A and 6 B to be controlled by the body-system on-board control apparatus 10 A, via signal lines (indicated by thick broken arrows in FIG. 3 ) for transmitting control signals.
  • the control signal input/output unit 22 outputs, to the body-system loads 6 A and 6 B, a control signal for controlling their operations in response to the command provided from the processing unit 21 .
  • the body-system loads 6 A and 6 B are devices that feed back information, such as sensors
  • the control signal input/output unit 22 acquires information from the body-system loads 6 A and 6 B, and provides the information to the processing unit 21 .
  • the switching command output unit 23 outputs, to the power source box 30 A, a command for switching between supply and non-supply of power to the body-system load 6 A that is connected to the power source box 30 A, in response to the command that is provided from the processing unit 21 .
  • the first communication unit 24 is connected to the communication trunk line 4 via the communication line, and communicates with the other on-board control apparatus via the communication trunk line 4 .
  • the first communication unit 24 performs communication according to a communication protocol such as Ethernet or CAN, for example.
  • the first communication unit 24 transmits information by converting information to be transmitted, which is provided from the processing unit 21 , into an electrical signal and outputting the electrical signal to the communication line. Also, the first communication unit 24 receives information by sampling and acquiring the potential of the communication line, and provides the received information to the processing unit 21 .
  • the second communication unit 25 is connected to the in-vehicle network 5 via the communication line, and communicates with the other on-board control apparatus via the in-vehicle network 5 .
  • the second communication unit 25 performs communication according to a communication protocol such as Ethernet or CAN, for example.
  • the communication protocols employed for the first communication unit 24 and the second communication unit 25 may also be the same or different from each other.
  • the second communication unit 25 transmits, to the power source box included in the other on-board control apparatus, a command for switching between supply and non-supply of power to the body-system loads that are connected to this power source box, in response to the command that is provided from the processing unit 21 .
  • the power source box 30 A of the body-system on-board control apparatus 10 A includes a switching control unit 31 , a switching command input unit 32 , a communication unit 33 , and a switch group 34 .
  • the switch group 34 includes a plurality of switches 34 a and 34 b .
  • the switches 34 a and 34 b are individually switched between conduction and interruption under the control of the switching control unit 31 . Ends on one side of the switches 34 a and 34 b are connected to the power source trunk line 3 via a power line, and ends on the other side of the switches 34 a and 34 b are connected to the respective loads.
  • the body-system load 6 A is connected to the switch 34 a
  • the multimedia-system load 7 A is connected to the switch 34 b.
  • the switching command input unit 32 receives a switching command from the controller 20 A, and provides the received switching command to the switching control unit 31 .
  • the switching control unit 31 switches between conduction and interruption of the switches 34 a and 34 b of the switch group 34 , in response to the switching command that is received by the switching command input unit 32 .
  • the switch that is switched by the switching control unit 31 in response to the switching command received by the switching command input unit 32 is the switch 34 a , which is connected to the body-system load 6 A to be controlled by the controller 20 A of the body-system on-board control apparatus 10 A (that is, the load to which a control signal is provided from the controller 20 A).
  • the communication unit 33 is connected to the in-vehicle network 5 via the communication line, and communicates with the other on-board control apparatus via the in-vehicle network 5 .
  • the communication protocol employed for the communication unit 33 is the same as the communication protocol employed for the second communication unit 25 of the controller 20 A.
  • the communication unit 33 receives a switching command that is transmitted from the controller of the other on-board control apparatus via the in-vehicle network 5 , and receives the switching command from the other on-board control apparatus.
  • the communication unit provides the received switching command to the switching control unit 31 .
  • the switching command that is input to the power source box 30 A from the controller 20 A of the body-system on-board control apparatus 10 A includes, for example, information specifying an object to be switched such as the identification numbers of the switches 34 a and 34 b of the power source box 30 A or the identification numbers (e.g., port numbers) of the connection terminals for connecting the loads, and information specifying whether the object to be switched is switched to the supply state of power or the non-supply state of power.
  • the switching command may also include information specifying the identification numbers of the loads.
  • the power source box 30 A stores the correspondence between the identification information of the loads and the switches 34 a and 34 b to which the loads are connected.
  • the switching command that is transmitted to the power source box of the other on-board control apparatus via the in-vehicle network 5 by the second communication unit 25 included in the controller 20 A of the body-system on-board control apparatus 10 A and the switching command that is transmitted by the controller of the other on-board control apparatus and is received by the communication unit 33 of the power source box 30 A of the body-system on-board control apparatus 10 A include the identification information of the on-board control apparatuses, the identification information of the switches 34 a and 34 b , and the information specifying the supply state of power and the non-supply state of power.
  • the switching control unit 31 switches between conduction and interruption of the switches 34 a and 34 b of the switch group 34 in response to the switching command that is provided from the switching command input unit 32 and the switching command that is provided from the communication unit 33 , and switches between supply and non-supply of power to the loads that are connected to the power source box 30 A.
  • the switch that is switched in response to the switching command from the controller 20 A of the on-board control apparatus in which that switch is included and the switch that is switched in response to the switching command from the other on-board control apparatus via the in-vehicle network 5 may be distinguished from each other.
  • the switch 34 a may be defined to be connected to the body-system load 6 A, and not to be connected to the multimedia-system load 7 A, for example.
  • the plurality of switches 34 a and 34 b included in the switch group 34 may also be switched by one of the switching command from the controller 20 A of the on-board control apparatus in which the switches are included and the switching command from the other on-board control apparatus.
  • a configuration may also be employed in which the switching control unit 31 stores the correspondence between the loads connected to the switches 34 a and 34 b and the on-board control apparatuses that control these loads, it is determined whether the correspondence between the on-board control apparatus that is the output source of the provided switching command and the load to be switched is valid, and the switching is not performed if the switching command is not a valid switching command.
  • FIG. 4 is a flowchart showing the procedure of a switching control process performed by the power source box 30 A of the body-system on-board control apparatus 10 A. Note, that the switching control process performed by the power source box 30 B of the multimedia-system on-board control apparatus 10 B is the same as the process shown in this flowchart, and thus illustration and description of the corresponding flowchart are omitted.
  • the switching control unit 31 of the power source box 30 A of the body-system on-board control apparatus 10 A determines whether a switching command from the switching command output unit 23 of the controller 20 A is input to the switching command input unit 32 (step S 1 ).
  • the switching control unit 31 determines whether the communication unit 33 receives a switching command from the other on-board control apparatus (step S 2 ). If a switching command is not received from the other on-board control apparatus, the switching control unit 31 returns the process to step S 1 , and waits until a switching command is provided from the controller 20 A or the other on-board control apparatus.
  • the switching control unit 31 determines the switch 34 a or 34 b to be switched, from the plurality of switches 43 a and 43 b included in the switch group 34 , based on the information included in the switching command (step S 3 ). Then, the switching control unit 31 switches between conduction and interruption of the switch 34 a or 34 b to be switched based on the information included in the switching command (step S 4 ), and ends the processing.
  • the on-board power supply system includes, in the vehicle 1 , the on-board control apparatuses (the body-system on-board control apparatus 10 A and the multimedia-system on-board control apparatus 10 B) in which the controllers 20 A and 20 B for controlling the operations of the controlled devices (the loads) and the power source boxes 30 A and 30 B for switching between supply and non-supply of power to the loads from the power source (the battery 2 ) are integrated.
  • the on-board control apparatuses the body-system on-board control apparatus 10 A and the multimedia-system on-board control apparatus 10 B
  • the multimedia-system load 7 A to be controlled by the controller 20 B of the multimedia-system on-board control apparatus 10 B is connected to the power source box 30 A of the body-system on-board control apparatus 10 A via a power line.
  • the power source box 30 A of the body-system on-board control apparatus 10 A switches between supply and non-supply of power to the multimedia-system load 7 A that is connected to the power source box 30 A, in response to a switching command from the controller 20 B of the multimedia-system on-board control apparatus 10 B.
  • the body-system load 6 B to be controlled by the controller 20 A of the body-system on-board control apparatus 10 A is connected to the power source box 30 B of the multimedia-system on-board control apparatus 10 B via a power line, for example.
  • the power source box 30 B of the multimedia-system on-board control apparatus 10 B switches between supply and non-supply of power to the body-system load 6 B that is connected to the power source box 30 B, in response to a switching command from the controller 20 A of the body-system on-board control apparatus 10 A.
  • the degree of freedom of connection between the power source boxes 30 A and 30 B of the on-board control apparatuses and the loads via a power line in the vehicle 1 is increased, by making it possible to connect loads that are not to be controlled by the corresponding controller 20 A and 20 B to the power source boxes 30 A and 30 B of the on-board control apparatuses. This makes it possible to suppress an increase in the amount of the power lines mounted in the vehicle 1 .
  • the power source box 30 A of the body-system on-board control apparatus 10 A is provided with the switches 34 a and 34 b for switching supply and non-supply of power to the loads, the communication unit 33 that receives a switching command from the other on-board control apparatus, and the switching control unit 31 that switches between conduction and interruption of the switches 34 a and 34 b in response to the received switching command.
  • the power source box 30 A integrated in the body-system on-board control apparatus 10 A can switch between supply and non-supply of power to the multimedia-system load 7 A that is not to be controlled by the controller 20 A, without hindering the processing of the controller 20 A that controls the operations of the body-system loads 6 A and 6 B.
  • the communication unit 33 of the power source box 30 A receives a switching command from the other on-board control apparatus via the in-vehicle network 5 .
  • the power source box 30 A can receive a switching command from the other on-board control apparatus using the existing in-vehicle network 5 . Accordingly, it is possible to suppress an increase in the amount of the signal lines mounted in the vehicle 1 .
  • each load is connected to the power source box of the nearest on-board control apparatus via a power line, and the load is connected, via a signal line, to the controller of the on-board control apparatus that controls that load.
  • the body-system load 6 A and the multimedia-system load 7 A that are disposed in the vicinity of the body-system on-board control apparatus 10 A are connected to the power source box 30 A of the body-system on-board control apparatus 10 A via a power line
  • the body-system load 6 B and the multimedia-system load 7 B that are disposed in the vicinity of the multimedia-system on-board control apparatus 10 B are connected to the power source box 30 B of the multimedia-system on-board control apparatus 10 B via a power line, for example.
  • the body-system loads 6 A and 6 B are connected, via signal lines, to the controller 20 A of the body-system on-board control apparatus 10 A that controls these loads, and the multimedia-system load 7 A and 7 B are connected, via signal lines, to the controller 20 B of the multimedia-system on-board control apparatus 10 B that controls these loads.
  • the length of the power line that connects the power source boxes 30 A and 30 B of the on-board control apparatuses and the loads can be shortened.
  • the body-system on-board control apparatus 10 A and the multimedia-system on-board control apparatus 10 B are mounted in the vehicle 1 .
  • the on-board control apparatuses may be apparatuses other than a body-system on-board control apparatus and a multimedia-system on-board control apparatus, and the loads may be loads other than a body-system load and a multimedia-system load.
  • three or more on-board control apparatuses may be mounted in the vehicle 1 .
  • a configuration is employed in which the controller and the power source box of the on-board control apparatus transmit and receive a switching command via the in-vehicle network 5 , but the present disclosure is not limited to this configuration.
  • a configuration may also be employed in which the controller of one of the on-board control apparatuses and the power source box of the other on-board control apparatus to which the load controlled by this controller is connected are connected using a signal line, and a switching command that switches between conduction and interruption of a switch is directly provided from the controller of the one of the on-board control apparatuses to the power source box of the other on-board control apparatus via the signal line.
  • the methods of the modifications described below may also be employed as the method of transmission and reception of a switching command between the on-board control apparatuses.
  • FIG. 5 is a block diagram showing a configuration of a body-system on-board control apparatus 110 A according to a first modification.
  • a switching command from the controller of one of the on-board control apparatus to the power source box of the other on-board control apparatus is transmitted and received via the communication trunk line 4 , not via the in-vehicle network 5 .
  • the controller 20 A of the body-system on-board control apparatus 110 A according to the first modification includes no second communication unit 25 that performs communication via the in-vehicle network 5 , and transmits a switching command to the power source box of the other on-board control apparatus using the first communication unit 24 .
  • the power source box 30 A of the body-system on-board control apparatus 110 A includes a communication unit 133 that performs communication via the communication trunk line 4 , instead of the communication unit 33 that performs communication via the in-vehicle network 5 . In this manner, the power source box 30 A can receive a switching command from the other on-board control apparatus using the communication unit 133 via the communication trunk line 4 .
  • FIG. 6 is a block diagram showing a configuration of a body-system on-board control apparatus 210 A according to a second modification.
  • the on-board power supply system according to the second modification is the same as the first modification in that a switching command is transmitted from the controller of one of the on-board control apparatuses to the power source box of the other on-board control apparatus via the communication trunk line 4 .
  • the controller 20 A and the power source box 30 A share one communication unit 224 , and perform communication via the communication trunk line 4 .
  • the communication unit 224 may also be included in either the controller 20 A or the power source box 30 A.
  • the controller 20 A and the power source box 30 A sharing one communication unit 224 , the number of communication units (e.g., communication ICs) mounted on the body-system on-board control apparatus 310 A can be reduced, and the cost of the body-system on-board control apparatus 10 A can be reduced.
  • the number of communication units e.g., communication ICs
  • FIG. 7 is a block diagram showing a configuration of a body-system on-board control apparatus 310 A according to a third modification. Similar to the body-system on-board control apparatus 210 A according to the second modification, the body-system on-board control apparatus 310 A according to the third modification includes only one communication unit 224 . Note, that in the body-system on-board control apparatus 310 A according to the third modification, the power source box 30 A does not directly transmit and receive information to and from the communication unit 224 . Instead, if the communication unit 224 receives a switching command from the other on-board control apparatus, the controller 20 A outputs, to the power source box 30 A, the switching command from the switching command output unit 23 .
  • the power source box 30 A can receive a switching command from the other on-board control apparatus via the controller 20 A, and can switch between conduction and interruption of the switches 34 a and 34 b in response to the received switching command.
  • the power source box 30 A does not need to distinguish whether the provided switching command is transmitted from the controller of the other on-board control apparatus or from the controller 20 A provided on the body-system on-board control apparatus 10 A in which the power source box 30 A is included.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Computer Networks & Wireless Communication (AREA)
US16/612,502 2017-05-15 2018-04-24 On-board power supply system and on-board control apparatus Active 2038-06-11 US11239693B2 (en)

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PCT/JP2018/016580 WO2018211922A1 (ja) 2017-05-15 2018-04-24 車載電力供給システム及び車載制御装置

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JP6798417B2 (ja) 2020-12-09
JP7031720B2 (ja) 2022-03-08
CN110621547A (zh) 2019-12-27
US20220094161A1 (en) 2022-03-24
WO2018211922A1 (ja) 2018-11-22
US20200099253A1 (en) 2020-03-26
DE112018002487T5 (de) 2020-02-13
JP2021035834A (ja) 2021-03-04
JP2018192863A (ja) 2018-12-06
US11752959B2 (en) 2023-09-12

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